Efficiency and environmental safety of organic-mineral fertilizers on crops of early cabbage in the Volga region
| Autor: | I.F. Medvedev, A.N. Zelenova, V.A. Nazarov |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | The Agrarian Scientific Journal. :8-11 |
| ISSN: | 2587-9944 2313-8432 |
| DOI: | 10.28983/asj.y2019i3pp8-11 |
| Popis: | The article presents a comparative assessment of the influence of fertilizing properties of glauconitic agro-ores is given, as well as of its concentrate, produced under the action of a magnetic separator; of concentrate, additionally modified by ultra-high-frequency radiation (microwave radiation); and of organic-mineral fertilizers, including modified concentrate and biohumus on the increase in the yield of early cabbage cultivated on chestnut medium heavy loamy soil, and its quality. It was established that the application of glauconite concentrate provided an increase in yield additionally by 5.3%, and during the processing of its microwave radiation, it is increased from 33.3 to 34.4 t/ha. However, the application of organic-mineral fertilizers was the most effective variant. The optimum ratio between the two components was 30% concentrate and 70% biohumus and the application of this fertilizer at a dose of 1 t/ha. After application of the fertilizer in this dose such, the content of dry matter, sugars, vitamin C in cabbages increased, and the content of nitrates and heavy metals decreased, the level of which did not exceed permissible values. |
| Databáze: | OpenAIRE |
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